Combinational code entry controlling means for accumulators



.April 13, 1948.

H. s. BEATTIE COMBINATIONAL CODE ENTRY CONTROLLING MEANS FOR AC CUMULATORS 2 Sheets-Sheet 1 INVE TOR A'TTORNEY r M mm M er 5 a a g e M 3? w I #3 4| b w 3 M ,m K m R G M W 7 W H F m 0 a ,R y M/ Z R 11 0 v a. m {z M w 3 M I 41 {R ,6 a M 11 0 u 9 5 W MM T R u 2 a a M H H R} fl f 7 ax ac 6 H A u A v M Q n@ r J a 3 3 5 6 7 Q 11? W Y Fi 6 m Patented Apr. 13, 1948 ooMB'INATIoNAL CODE ENTRY CONTROL- LING MEANS FOR ACCUMUL'ATORS "Horace S.- Beattie, -Poughkeepsie, N. Y., --assignor to International Business Mac'hinesGo'rporation.-New York, N. -Y.,-a 'corporation'of New York Application December 9, 1944, SerialNo."567,435

Claims. 1

' This invention relates to record controlled accounting m'achines and more particularly to improvements in the digitentering mechanisms for accumulators.

The present improvement-wasdevised primarily toprovide a practical 'form ofentering mechanism for 'an accumulator operableaccording to the decimal'notation system under-control of a card perforatedeccordingto an arbitrary code which is selected to fitin the scheme-of operation. The prior art is replete with various forms of 'entering mechanisms for accumulators operable according to the decimal notation system in which the-control element therefor, such as a card,=keys,etc., -is=indexed in the same system. The indexing' of the card in the same system, bestexem'plifiedas the Hollerith card, presents *many advantages with corresponding disad- -vantages; namely, in the area occupied by the perforations providing the :index point .positions -for the denominational columns. Cards perforated according to a --combinational hole system surmou'ntthisobiection but result'in the disadvantage of requirements for code translators,

converters, and the like to effect accumulator operation according to the selected notation system.

It is, therefore, the main object of thepresent invention to provide an entering means under control of coded designations which is simple in construction and embodiment, practical in construction and operation and which .possesses many features which render codeddesignations useful and practical for operationof card controlled accounting machines.

Another object of the invention is the provision of an entry mechanism operable during varying periods of digit entering operations which -providesfor the selective entry of digits in an'accumu'lator, which digits entered alone or inpredetermin'ed combinations effect entries according to the-desired notation system.

A still further object of the invention is to select such digit entries under control of card perforations arranged according to an arbitrary code and which are assigned digital values according to I an'established system.

In carrying out the fundamental and basic features-of th invention, the digits of the system which are selected are arbitrary but must conform tothe requirement that the digits alone or in combinations 'will effect all of the digit entries required in the notation system. In the decimal system there are many such combinations-of iiigitsfsuch asl, 2, 2, 4; :1, 1, 2, 5; 1, 2,

.2 4, 6 and2, 1,- 3, 4 herein-employed-for the-purposeof illustration. Proper selection of digits reduces the number of perforations located in a card column, thus requiring I less than-nine perforations which have been-previously used in the i-lol'ierith'type of card to express "the'digits 1-'-9, inclusive in the decimal system. Accordingly, "the proper selection of the assigned values to' the perforations rised, singly or in combination, re-

duces -the-card-area perforated to expressand represent ham-bars. With this understanding, "it is obviousthatthe perforations'do not represent digits by virtue of their difie'rential locations as in the Eollerith type of-cardgbut by the arbitrary vaiues of the digits assigned to them, and functiontherefore by'proper correlation with the-entering mechanism to selectively determine the appropriate entries in the accumulator.

A still-further obiect of the irvention is to correlate the entering mechanismwith the analyaing mechanismin such manner that the card, perforated to represent the assigned values, can be analyzed while in motion. By feeding the card past 'a-single analyzing means the latter can be rendered eiiective in succession to determine the particular digit entries to be made in the entering cycle.

Theaccumiilator preferably employed inconnection with the present invention is ofa type well known in the-art wherein the initiation of a digit enteringope'rationis eil-ected by transmis- -sion of 'a start impulse to a start or advance eiectrcmagne't which --couples the accumulator element to a driving'shaft and wherein the entry operation for the accumulator element may be terminated bytransmitting an impulse to a stop electromagnet Whichhas the designated function. Accordingly, in the adoption of this form of accumulator th the presentinvention the digi'te'ntry-is ininated and terminated inoperation by impulses transmitted to the respective start-and'sto'p magnets. For additive operations the sta'rt magnet receives impulses under control of the'card perforation analyzing means at predetermined times in the entering cycle of operation. The impulse transmitting means as- --sociated w th the stop magnet'is eflective after transmission of each start impulse to transmit an impulse tothe stop magnet to terminate the digit entering operation, if it Was initiated. By suitably spacing the timing of successive start andstop impulsesdigit entering periods of various durations are :provided which effect the entry'of the desired digit in the accumulator element. The analyzing means is effective at the lator.

time a perforation is analyzed to transmit an impulse to the start magnet. Hence, this novel correlation between the analyzing mechanism and the start magnet and the cyclically operable impulse transmitting means and the stop magnet enables the initiation of digit entering periods of durations to cause the entry of digits in the accumulator equivalent to the assigned digital values of the perforations. The above construction carries out the objects of the invention in a manner which is distinguished by its simplicity and effectiveness in operation.

A still further object of the invention is to enable the entering mechanism to operate in a subtractive manner to enter the nines complements of each digit in the accumulator when subtracting operations are to be selectively effected. By appropriate selection, all derived from a supplemental cyclically operable impulse transmitting means rendered effective when subtraction is to be performed, impulses are transmitted to the start magnet at the beginning of a subtracting entering cycle. The analyzing means is correlated with the stop magnets when subtraction is to be performed so that such impulses terminate subtracting operations when nines complements of the digits represented in a denominational column are entered in the accumu- The provision of this subtraction scheme augments the usefulness of the additive entering arrangement without detracting from the feature of simplicity in construction and effectiveness in operation.

Other objects of the invention will be pointed out in the following description and claims and illustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. 1 is a diagram of the electrical wiring connections.

Fig, 2 is a timing diagram.

Fig. 3 shows part of a record perforated according to the arbitrary code to represent the digits 1-9 and 0, as well as X to represent a negative amount to be subtracted.

Fig. 4 is a view in side elevation of an assembled accumulator unit of a construction shown in detail in Patent No. 2,328,653.

The present improved system for effecting item entries is applicable to record controlled machines having cards perforated according to a combinational hole system.

It has been shown as a matter of illustration as applied to a machine of the type in which multiple index point positions are perforated in the card columns and in which the cards are adapted to be analyzed while in motion. The particular type of machine does not enter into the present invention, as any other type of machine in which holes are analyzed would serve for the purpose of explanation and embodiment equally as well. Reference may be had to the patent to A. W. Mills, No. 2,019,418, and particularly to Patent No. 2,161,589, E. J. Rabenda, for a machine of the type to which the present invention is particularly adaptable.

Referring now to the wiring diagram (Fig. 1), the machine is provided with a card feed clutch magnet it, shown in the upper part of Fig. 1, which when energized, will cause the feeding of record cards in a record controlled machine in the usual manner from the supply magazine so that they will move past the upper brushes U13 and, exactly one machine cycle later, pass the lower brushes LB. The machine is driven by a motor M which is placed in continuous operation by closing the power supply switch S3. Depression of the start key to close contacts I i will complete a circuit from one side of line 12, through start key contacts II, card feed clutch magnet i0, relay contacts MIa, stop key contacts l3 to line I4. In parallel with clutch magnet I0 is a relay R5 which is energized concurrently therewith to close its contacts R5a.

As the cards subsequently pass the lower brushes LB, the usual card lever contacts LCL close to complete an obvious circuit through the lower card lever relay LCLM which will close its contacts LCLMa, providing the holding circuit for the LCLM relay extending from line I2 to relay LCLM, contacts LCLMa, cam contacts CF! to line M.

It may be pointed out at this time that in the circuit diagram there are shown various cam controlled contacts. Ihose designated with the prefix CF are in operation when the card feeding mechanism functions; those prefixed CR are constantly in operation.

Relay magnet LCLM closes its contacts LCLM'b to provide a holding circuit for the card feed clutch magnet H] which is traceable from line l2, contacts LCLMb, Rim, magnet H3, contacts Mia, stop key contacts l3 to line H.

Machines of the type to which the present improvements are preferably applied have also incorporated therewith a group control mechanism which enables the successive feeding of cards containing the same classification or group control designation without interruption. Upon a change in group classification the group control mechanism will function to energize the MI relay, thereby opening its Mla contacts to permit interruption of the card feed clutch magnet circuit when cam contacts CFI2, which normally short-circuit contacts MIa, open at a predetermined point in the cycle of operations. The group control mechanism may consist of any suitable embodiment and could, for example, consist of the specific arrangement shown in the patent to E. J. Rabenda, No. 2,161,589, granted June 6, 1939.

The present invention is capable of effecting entries additively as well as subtractively and the machine is conditioned for a subtracting operation whenever the upper brushes U13 sense a special control designation at the X index point position.

Card lever relay contact UCLlVfa are controlled by a relay magnet UCLM connected through CF51 to a so-called card lever brush I5 which traverses the edge of the cards. When the brush I5 is not insulated from the contact roller by the presence of a card thereat, a circuit is completed from line H, contacts CRl, CF! I, relay contacts UCLMa, UB contact roller, brush it, contacts CFQ, relay UCLM to line iii. Relay UCLM closes its contacts UCLMb to establish a holding circuit through contacts CPS. Thus, as long as cards continue to feed, relay UCLM is not energized and its contacts UCLMa subsequently remain closed.

At this time it will be understood that when a perforation is at the X index point position of a card and is analyzed by the upper brush UB in the respective column, a circuit is closed from line l2, through cam contacts CR1, contacts CFI I, relay contacts UCLMa, UB common contact roller, perforation at the X index point position, upper :brnsnUB'to azplug. socket 26. .As will hes-later described, a plug connection is made from such plug socketto transmit the impulse to 1 a subtracting control relay R9.

As i's well known in :thety-pe of machine now being described, entry operations are effected under control of perforations when the card is sensed bythe LB-brushes. The entry circuit in partlstraceablefrom line 14, lower card lever contacts LCLMc,..cam contacts CF2, LB common contact roller throughthe perforation in the card to a plug socket 18. The remainder of the entry circuit will be subsequently described and at this point it is explained that it is customary to efiect plug connections l9 from such plug socketstto plug sockets 20 of theparticular orders of theaccumulator in which the entries are tobe reflected.

The entry of digits 2, l and 4 is directly initiated when holes at such digit positions are analyzedby the LBanalyzing brushes. As shown inFig. 3,-torepresent these digits a single hole is located ina column at a corresponding code position.

The impulses for initiating-the operation of the accumulator elements, transmitted as the particular cardholes 2, 1, 4 are analyzed, is directed from plug connections I9 to plug sockets 2|! and thence serially through the following relay contacts, all .of which are at .normal at the time the=irn pu1ses are directed. For the units order the circuit extends from the units order plug socket 2|], thence through relay contacts RBU, TSBU, RS2U, R'IU, -RSlU, to the advance magnet- AM of the units order, thence by a wire 25 to the line .|2. Thus, referring to the timing diagram of Fig.2 the advance magnet AM is energized at differential times, dependent upon the particular card hole analyzed and accordingly the accumulator element is initiated into operation at differential times. The accumulatorelement rotates until a following impulse is directed to-thestop magnet SM under control of cam .operated contactsby a-circuit now to be described.

For a digit entry of .2 the accumulator element is retainedclutched until said element is rotated to the extent of two clutch teeth. The digit entry of .1 is initiatedat alater time when the 1 holeiis analyzed so'thatthe accumulator element -willibe=clutched to theextent of only one clutch tooth before it is declutched. For the entry of 4, the accumulator element is clutched at the time that the 4 holeis analyzed and will remain clutched untilthe element is rotated to the extent of four clutch teeth,

Theimpulses whichare directed to the stop 'magnetvSM to terminate additive digit entering operations are directed by the cam contacts CR3, .thecircuit extending from the line H through cam-contacts CR3, thence through the R8 relay contacts which are transferred just prior to the time that the CR3.contacts transmit an impulse, thence through the stop magnet SM of the related order, wire 2-3, to the line l2. The R8, U, T and H relay contacts for the three denominational orders shownherein are transferred upon the energization of the R8 relay which is enersized-at times-under control of the CFIO contacts. The circuit forrepeatedly energizing the R8 relay extends fromthe line l4, through CFHJ contacts, -R8arelay, to: line I 2.

Referring to the timing diagram, it will be ,observedzthatthe CR3 contacts close at three different Jtimesx during the operating .cycle but shortly: prior to .each closing. of the CR3 contacts theCF'lJJ 'contactsare closed, insuring that the R81 relay contacts have-been transferred prior to theinitiation of the accumulator operation terminating impulse directed 'by the CR3 contacts.

It is desirable to energize the stop magnet SM prior to the time that .theaccuinulator element has rotated the full extent of a tooth,.giving sufiicientti-me for the train of parts leading from the SM magnet to :the accumulator declutching mechanism tocperate to declutch the accumulatorelementafter therotation of a full tooth has been secured; This is the reason for transmission of the CR3 impulses at the particular times shown. It isalso pointed out that CFIEI contacts are closed before and also after the closing of the CR3 contacts to insure that the time for the energization of the stop magnet SM is fully utilized.

For the entry or the digit '2 or 1, the accumulator element is rotated to the extent of two teeth or one tooth, respectively, dependent upon the hole analyzed and after such extent of rotation the first closure of cam contacts CR3 energizes the stop magnet SM to terminate-the 2 or 1 digit entry. The second-impulse directed by the CR3 contacts is timed so as to declutch the accu1nulator element after a rotation to the extent of four clutch teeth to terminate a 4 digit entry.

As designated in Fig. 1 and-hereinbefore stated, it is preferred to utilize the type of accumulator unit fully shown and described in the Patent No. 2,328,653, issued to C. D. Lake, et al., granted September 7, 1943.

The construction and operation of this unit is fully shown and described in this patent and therefore only a brief reference is necessary herein. In Fig. 4 some of the major elements of the units are shown identified by the same reference numerals as in the patent.

The pivoted armature 45 is between the cores of the advance magnet AM and the stop magnet SM and said armature had a connection to a clutch lever 2|. In thedeclutching position of the clutch lever 2|, shown in Fig. 4, the armature 45 is biased against the core of the SM magnet. Whenever the AM magnet is energized, the armature 45 will take an alternative position, rocking the clutch lever 2| to a clutching position. The clutch lever 2| is held in either-clutching or declutching position by a latch 35.

A feature of the accumulating unit is that the armature 45 will remain biased by latch 35 against the energized AM or SM magnet that last attracted it.

Clutch lever 2| is shown in declutching position and when moved to an unclutching position it releases a disk 20 for counterclockwise movement, and a spring 3| is now efiective to rock a clutch pawl 30 into engagement with a ratchet wheel Hi. The latter is fixed to a constantly rotating gear l1 and therefore the ratchet wheel l5 constantly rotates. As a result of this clutching operation an accumulator element 2 shown in Fig; 1, is initiated in rotation. The termination of the rotation of the accumulator element is effected as a result of the energization of the SM or stop magnet. This will attract the armature 45, rocking the clutch lever 2| to declutching position.

For reasons that will be clearer later on it is preferable not to initiate the 3 digit entry when the hole having the assigned digital value 3 is analyzed but to store upthe digit representation in a relay for each order which initiates the 3 entry at a later time in the operating cycle.

Prior to the time the 3 digit representing hole is analyzed, cam contacts CR2 close and by an obvious circuit R6 relay is energized to transfer its R5, U, T, H contacts. Then when the 3 hole is analyzed a circuit will be closed which, for the units order, extends from the related plug socket 20, through the RiiU relay contacts now transferred, to the pickup winding of a related storage relay R3, to line I2. The pickup winding of each energized relay closes the respective stick relay contacts R3A and the stick circuit for each relay extends back through CR cam contacts to line I4.

Shortly before CR4 cam contacts close at about 191, cam contacts CFI3 close and by an obvious circuit energizes the TSB relay to transfer the TSB, U, T, H relay contacts. While such relay contacts are closed and also the'R3B relay contacts in the order in which a 3 digit entry is to be eifected, an impulse is transmitted at about 191 by a circuit from line I4, through CR5 cam contacts, R313 relay contacts of the order in which a storage relay was energized, thence through the related TSB relay contacts now transferred, serially through the following relay contents now at normal RS2, R7, RSI to the advance magnet AM to line I2, This will initiate the accumulator operation for the entry of the 3 digit and the accumulator wheel will rotate to the extent of three clutch teeth.

The third impulse directed by the CFIU contacts will energize the R8 relay and the latter will transfer its contacts in each denominational order. Thereafter, the third impulse directed by the CR3 cam contacts will be transmitted through the transferred relay contacts of the R8 relay to the stop magnet SM of each denominational order. When initiation or" the accumulator element is effected in any order for the digit 3, energization of the SM magnet at this time will terminate such 3 digit entry. The impulses transmitted by CR3 to the stop magnet SM of other orders will be ineffective because each armature 45 is against th core of the SM magnet.

The preceding description has described the operation of the machine for the entry of the basic digits 1, 2, 3 and 4. From the code shown in Fig. 3 it is evident that the remaining digits 5-9, inclusive, are enteredby a combination of the basic digit entries. For example, entry of the digit 5 is effected by combination of the digit entry 1 and 4. The digit entry of 6 is obviously effected by the successive entry of the digit 2 and the digit 4, etc.

It is thought unnecessary to give further description of the manner of operation of the machine for entry of combination of digits, since this is carried on precisely in the same manner and by the same circuits previously described in detail for the basic digits. However, it should be observed that for entry of the digits '7, 8 and 9 the digits 3 and i are separately entered. Since these 3 and 4 entries cannot occur concurrently because a 4 digit entry would overlap a 3 digit entry, it is desirable to store up one of these digit representations to control a successive entry, Herein, the digit 3 is stored up, as previously explained.

It is desirable that zeros be represented by holes at the 0 index point position in columns at the left of the significant digit of the highest denominational orders. It is further common practice to punch zeros at the left of such significant digit to show that all card columns of a card field have been punched. To prevent impulses from being directed to the advance magnet AM when such holes are analyzed, it is explained that the cam operating the CFZ contacts does not have a high cam portion to close such contacts when the 0 holes are analyzed. This omission is evident from the timing diagram (Fig. 2). Hence, no impulses will be transmitted to the AM magnet when 0 representing holes are analyzed in any card column.

Subtraction The machine also includes an arrangement whereby specially characterized records will effect subtraction of the amounts represented by the perforations. A hole at the X index point position of the card. shown in Fig. 3 conditions the machine to enter an amount negatively.

The plug socket 25 associated with the brush which analyzes the X designation is plug connected to plug socket 421, wired to the R9 relay. When the X hole is analyzed by a UB brush a circuit is closed from line I2, through CRI contacts closed at the time the X hole is analyzed, through CFII cam contacts also closed at this time, thence through UCLMa relay contacts now closed, UB analyzing brush, plug socket 26, plug connection to plug socket 40, pickup Winding of the R9 relay to line I4. R9 relay closes its stick contacts R9A and a stick circuit for R9 relay extends back to line I2, through R9A relay contacts and stick cam contacts CF5. The latter holds the R9 relay energized for the remainder of the cycle and for a short, period at the beginning of the succeeding entry cycle.

R9 relay closes its relay contacts BBB and with the latter closed at the time CFB cam contacts close at the beginning of the next entry cycle a circuit is closed from the line I4, relay contacts R9B, cam contacts CFE, pickup winding of the RS relay to line I2. The pickup Winding closes stick contacts RSA and a stick circuit for the holding winding extends from the line I2, CFI4 cam contacts, stick relay contacts RSA, holding winding of the RS relay, RSI and RS2 relays to the line I4. The RSI and RS2 relays now transfer their respective U, T and H contacts.

The transfer of the RSI relay contacts coordinates the CPA cam contacts with the advance magnets AM of all denominational orders 50 that at predetermined times impulses directed by the CF4 cam contacts will energize the advance magnet AM of each order to tend to initiate digit entries 2, 4 and 3 in succession. The circuit for effecting this is from line I4, CF4 cam contacts, shifted RSI relay contacts, the associated AM magnet to line I2.

As previously described, the CFIll cam contacts effect the energization of the R8 relay to enable the latter to close its contacts prior to the transmission of each impulse by the CR3 cam contacts. Such cam contacts are utilized in subtraction to transmit an impulse to the stop magnet SM of each denominational order to thereby terminate the 2, 4 and 3 digit entries. The circuit for effecting this is from the line I4, CR3 cam contacts, R8 relay contacts now transferred, the associated SM magnet to line I2.

The effect of such circuits is to provide the capability of normally entering in each denominational order the digit entries 2, 3 and 4 automatically in succession. The summation of such digit entries will enter a 9 in each denomina- &3955245 tional order that the corresponding card column is imperforateor represents 0, which does-not control the entryof a digit, The presence of a hole in a card column will, inaccordance with the digit represented thereby, cancel or nullify the corresponding digitentry in amanner now to be described.

The principle of operation maybe expressed by the followingtable:

For theentry of the complement of certain digits expressed in the card'columns, such as digits 1- and 8, the normal 2- entry does not occur because-the presence of a hole at the 1 position terminates the accumulator operation after a 1 entry. In this operation the CF'4 cam contacts transmit an impulse-to theadvance magnet AM to initiate a 2 entry. Armature 45 will now be attracted by the core-of the AM magnet. At the time-the 1 hole is analyzed the impulse from the analyzing circuit extends from the plugsocket 20 through R6 relay contacts now normal, thence through the TSB relay contacts now'normal, thence through the transferred RSZ- relay contacts, thence through theR8 relay contacts now normaL'to the stop magnet SM toline I2.- Energiza-tion of the stopmagnet SM Will attract the armature 45 to declutch the accumulator element. Thus, whenever a 1 is'to be entered in a'complementdigitentry the normal 2 entry is shortened to result in the 1 digit entry.

For other complement digit entries, such as the entry of the nines complement of the digits 4, 5, 6, '7, 8, and 9, the normal 4-digitentryis cancelled -or nullified. As previously 'stated, cam'contacts CF4 transmit an impulse to the AM'magnets of all denominational orders to normally effect the 4 digit entry'in these orders. The 4digit representing card hole nullifies this because. concurrently with this impulse transmission to ;the AM magnet, an impulse is directed from the plug socket '20, through R6 relay contacts now normal, TSB contacts now normal, RS2 contacts. now. transferred, R8 relay contacts now normal to the stop magnet SM. Since, at this time, the armature 45 is already against the core of the SM magnet, concurrent impulses to the AM and SM magnets will not result in theclutchingof the accumulator element. The .rea-sonfor this is that the force of attraction exerted by. the v,SM magnet on armature v45 will begreater than that exercised by the AM. magnet, because oftheairgap between the armature .45 and thecore of vtheAM mag net. Thus, for certain digits: the normal 4 digit entry will be cancelled or nullified.

For the nines. complement of the. entry-of the digits 2, 6 and 9 the normal Zdigit entry is cancelled or nullified in the same manner. Cam contacts CF4 transmitv an impulse to the AM magnets of all denominational orders to normallyefiect ahe 2 digitentry. The 2 card hole nullifies this-because concurrently with this impulse an. impulse is directed from the .plug socket-20, through R6 relay. contacts now normal, TSB contactsnow normaLRSZ contacts now transferred, R8 relay contacts now normal, to the stop magnet SM.

For the nines complement entry of digits 3, '7, 8 and 9 the normal 3 digit entry is cancelled or nullified in the same manner. For the nines complement entry of digit 3 the cancellation impulse derived upon the analysis of the 3 card hole is stored up in a related R3 relay and the stored up reading is subsequently read out at the same time that the normal 3. digit entry is initiated. Upon the-analysis of the 3 card hole an impulse is directed from the plug socket 20, thence through R6 relay contactsnow transferred to the associated R3 relay magnet which is energized andheld energized under control of the'stick cam contacts CR5 inthe manner previously described. Just prior to the time thatthe CF4 cam contacts closev to initiate the 3 digit entry, CF|3 cam contacts close to energize the TSB relay. Concurrent with the closing of the CF4 cam contacts to initiate the 3 digit entry, CR4 cam-contacts close to transmit an impulse from the line through the CR4 camcontacts, B3B]- relaycontacts of the order in which the normal 3 digit entry is tobe cancelled, thencev through the TSB contacts now transferred, thence-through the RS2 contacts now transferred, thence through the R8 relay contacts now normal, to the stop magnet SM. Hence, concurrent impulses to'the AM and SM magnets willnot result in the-clutching of the accumulator element, and the 3 digit entry will be cancelled.

Whenever 9 is expressed in a card column the normal digit entries 2, land 3 are all cancelled and there will be no operation of the accumulator element.

The above describes the cancellation by the card holes of certain digit entries. Where there is no cancellation of an entry due to the'absence of a hole having that digit value the normal 1 entry is effected. For example, in entering the is effected because of the absence of a 3 .hole.

Thus, two successive entries 1, 3 effect a combined 4 digit entry which is the nines complement of 5. In the same manner'other successive digit entries are efiected where they are combined to effect a nines complement entry.

Units carry circuit The accumulator of the type shown herein is also provided with a units carry control mechanism associated with a units carry circult herein which is of the conventional arrangement. For this reason, such circuit will be described generally.

Considering now the units order accumulator wheel, when the latter passes from 9 to. 0 the carry contact blade 42 (see Fig. 4) will be shifted and latched to engage the 10 carry contact 44. Shortly after 270 01' the machine cycle, cam contacts CFI close to energize the R1 relay, which latter transfers its U, T and H .con tacts. Thereafter, cam contacts CF3 close, closing the circuit from the line H! through cam contacts CF'3, through the aforementioned 10 units carry contact and contact blade 42 of 11 the units order, thence through the R'lT contacts now transferred, thence through the RSIT contact now in normal position, to the AM magnet of the tens order, causing the clutching of the accumulator element to eifect a units carry to the tens order.

As fully shown in the patent to C. D. Lake et al., No. 2,328,653, a knockofi pin designated 53 in this patent serves at the end of a cyclical carry period to cause the accumulator wheel to be arrested after a carry entry. Of course, the knockoif pin 52 of the patented machine will not be used because herein the accumulator element is declutched at different times and by a different control means.

The so-called nines preparatory carry circuit is also provided in the type of accumulating unit shown herein and considering now the tens order, if the related accumulator wheel is standing at 9 as shown in Fig. 4, the 9 units carry control contact 43 will be engaged by the related contact blade 42 and the units carry impulse will be extended from the units carry contact 44 and blade 42 of the units order, thence through the 9 units carry control contact 43 of the tens order, related contact blade 42, thence through the R111 contacts now transferred, the RSiI-I contacts now in normal position, to the AM magnet of the hundreds order. In the customary manner, this will efiect a units carry to the hundreds order.

Entry of fugitive unit Since subtraction is effected herein by the complemental process by the entry of the nines complement of the amount to be subtracted, it is customary to convert this amount to the tens complement by the entry of the fugitive unit. The carry mechanism of a selected order is employed as the instrumentality to eifect this unit entry.

Referring to Fig. 1, a plug connection 46 is made between the units order and the highest denominational control order herein shown by way of example as the hundreds of thousands denominational order. Whenever the accumulator element of such order goes from 9 to 0, contact blade 42 will make contact with the contact point 44 and the unit carry impulse will be directed through such contact point 44 and contact blade 42, plug connection 46, thence through the R'IU contacts now transferred, RSIU contacts now at normal, to the AM magnet of the units order. This will effect a units carry to the units order, converting the nines complement entry to the tens complement entry.

While there have been shown and described and pointed out the fundamental novel features of the invention, it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated bythe scope of the following claims.

What is claimed is:

1.'In a machine controlled by a card having holes arranged at index point positions according to a 4-hole code, representing digit entries 1, 2, and two other digit entries, which entries singly or in combination represent all digits 1-9 of the decimal system, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator unit of the type wherein the digit entry in an accumulator element is initiated by an impulse transmitted to a start magnet, and is terminated by an impulse transmitted to a stop magnet, cyclically operable impulse transmitting means for transmitting successive impulses to said stop magnet timed to occur at three different times, one to terminate either the 2 or 1 digit entry whenever the entry has been previously initiated by the sensing of the corresponding 2 or 1 hole, and the remaining two impulses to terminate the two other digit entries, and means under control of said sensing means to transmit an impulse to said start magnet to initiate a digit entry corresponding to the digit representing hole sensed.

2. In a machine controlled by a card having holes arranged at index point positions according to a 4-hole code, representing digit entries 1, 2 and two other digit entries A and B, which entries singly or in combination represent all digits 1-9 of the decimal system, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator unit of the type wherein the digit entry in an accumulator element is initiated by an impulse transmitted to a start magnet, and is terminated by an impulse transmitted to a stop magnet, cyclically operable impulse transmitting means for transmitting successive impulses to said stop magnet timed to occur at different times to terminate each digit entry whenever the entry has been previously initiated by the sensing of a hole corresponding to such digit entry, other cyclically operable impulse transmitting means to transmit successive impulses, means under control of said sensing means to transmit impulses derived from said last named impulse transmitting means to said start magnet to initiate a digit entry whenever a hole 2, 1 or a hole representing the B digit entry is sensed, storage relay means, means under control of said sensing means for energizing said storage relay when a 3 hole representing the A digit entry is sensed during another digit entry if it occurs, and supplemental impulse transmitting means timed to transmit an impulse under control of said energized storage relay means after all previous digit entries have been eiiected to said start magnet to initiate the A digit entry.

3. In a machine controlled by a card having holes arranged at index point positions according to a -hole code, representing digit entries 1, 2, and two other digit entries A and B, which entries singly or in combination represent all digits 1-9 of the decimal notation system, means for Sensing said index point positions to ascertain the presence of digit representing holes, an accumulator unit of the type wherein the digit entry in an accumulator is initiated by an impulse transmitted to a start magnet, and is terminated by an impulse transmitted to a stop magnet, cyclically operable transmitting means for transmitting successive impulses to said stop magnet, timed to occur at three different times, one to terminate either the 2 or 1 digit entry whenever the entry has been previously initiated by the sensing of the 2 or 1 hole and the remaining two impulses to terminate the A and B digit entries, other cyclically operable impulse transmitting means to transmit successive impulses under control of said sensing means to said start magnet to initiate a digit entry whenever a hole 2, 1, or B-digit representing hole is sensed, storage relay means, means under control of said sensing means for energizing said storage relay when an A-digit represent- 13' ing hole is sensed during anotherzdigit entry if it occurs, and supplemental impulse transmitting means timed to transmit animpulse under control-of said energized storage. relay meansafter all previous digit entries have been effected, to said start magnet to initiate the A digit entry.

4. In a machine controlled. by a card havi: 1 card holes arra ged at index point positions according to a 4-hole code, representing digit entries 1, 2, and two other digit entries A and B, whi '11 entries singly or in combination represent ali digits l-9 of the decimal syste'n, for sensing said indexpoint positions to ascertain the presence of digit representing holes an accumulator uni t of the type wherein the digitentry is initiated by an impulse to a start magnet, is terminated by an impulse to a stop and wherein animpulse to the start magnet concurrently with animpulse to the stop magnet ineffective to initiate a digit entry, cyclically operable impulse transmitting means to transit-it timed impulses to start magnet to initiate the digit entries 1, ,2. and the two other-entries A and B, other cyclically operable impulse transmitting means to transmit impulses to the stop magnet which are spaced from the first named impulses to terminate digit entries 2, and the two other digit entries A and B, and means controlled by said sensingmeansupon sensing holes representing the digit. 2, and the two other digit entries A and B for transmitting impulses to said step magnet concurrently with the transmission of an impulse to said start magnet by the first named impulse transmitting means to thereby render the start magnet ineffective to initiate a digit entry corresponding to the digit representing hole sensed; and upon sensing the 1 digit representing hole to transmit an impulse to said stop magnet which is spaced with respect to the impulse transmitted to the start magnet to initiate a 2 digit entry to terminate the digit entry operation when a 1 digit entry has been effected.

5; In a machine controlled by a card having holes arranged at index point positions according to a 4-hole code, representing digit entries 1, 2, and two'other entries A and which entries singly or in combination represent all digits l-9 of the decimal notation system, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator element, means for initiating the operation of said accumulator element for a digit entry, means for terminating the operation of said accumulator element after a digit entry, cyclically operable means for causing said initiating means to be operative at different times to initiate digit entries 2, and the two entries A and B in said accumulator, other cyclically operable means for causing said terminating means to be operative at other difierent times to terminate digit entries 2, and the two entries A and B in said accumulator, and means controlled by said sensing upon sensing perforations representing the digit representing holes 2, and the two entries A and B to cause the operation of said terminating means concurrently with the operation of said initiating means effected by the first named cy elicalhv operable means to prevent the digit entry 2, and the two entries A and 13 corresponding to the digit value of the hole sensed, and upon sensing the 1 digit representing hole after initiation of the 2 digit entry to cause the operation. of the terminating means for terminating the operation of the accumulator element when a 1 digit entry has been effected.

6. In a. record controlled subtracting machine controlled byrecord cards wherein holes at a plurality of indexzpointrpositions represent different digits, which holes singly or in combination represent all the digits of a notation system, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator of the type wherein a digit entry is initiated by energizing a start magnet, is terminated by energizing a stop magnet, and the concurrent energization of the start and stop magnets prevents the initiation of a digit entry, means for transmitting impulses tosaid start magnet concurrent with the sensing of each of said index point positions to initiate digit entries in said accumulator corresponding to those represented by the indexpoints, further means to transmit impulses to-said stop magnet to terminate each of said digit entries, and means-under control of said sensing means for transmitting upon. sensing each digit representing hole an impulse to said stop magnet concurrent with the impulse transmitted by said first named. impulse transmitting means to said startmagnet to thereby prevent a digit entry corresponding to the digit represented by the hole sensed.

7.In a record controlled substracting means controliedby record cards, wherein holes at four index point positions represent digit entries 2, 1, 3, 4, which entries singly or in combination represent all digits 1'9, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator of the type in which a digit entry is initiated by energizing a start magnet, terminated by energizing a stop magnet, and energization of the start magnet and stop magnets concurrently prevents the initiation-of a digit entry, impulse transmitting means for transmitting successive impulses eoincident with sensing of the digit representing index points 2, 4 and at a subsequent time for a 3 digit entry to said start magnet to initiate corresponding digit entries in said accumulator to normally enter 9, further impulse transmitting means "to transmit impulses to said stop magnet to terminate the 2, 4 and 3 digit entries, storing means, means under control of said sensing means for conditioning said storing means when a 3 digit representing hole is sensed, means under control of said sensing means for transmitting impulses to said stop magnet coincident with the impulses transmitted to said start magnet by the first named impulse transmitting means when the 2 and 4 digit representing holes are sensed to prevent a 2 or 4 digit entry, respectively, and to said stop magnet when a 1 digit hole is sensed at a time which shortens the 2 digit entry initiated by the first named impulse transmitting means to a 1 digit entry, and means under control of said conditioned storing means to transmit an impulse to said stop magnet coincident with the transmission of the impulse to said start magnet which initiates the 3 digit entry to thereby prevent the 3 digit entry.

8. In a record controlled subtracting means controlled by record cards, wherein holes at four index point positions represent digit entries 2, 1, and A and B entries which entries singly or in combination represent all digits 1-9, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator of the type in which a digit entry is initiated by energizing a start magnet, terminated by energizing a stop magnet, and energization of the start magnet and stop magnets concurrently prevents the initiation of a digit entry, impulse transmitting means for transmitting successive impulses coincident with sensing of the 2 and B digit representing index points and at a subsequent time for said A digit entry to said start magnet to initiate corresponding digit entries in said accumulator to normally enter 9, further impulse transmitting means to transmit impulses to said stop magnet to terminate the 2, and A and 13 entries, storing means, means under control of said sensing means for conditioning said storing means when said A digit representing hole is sensed, means under control of said sensing means for transmitting impulses to said stop magnet coincident with the impulses transmitted to said start magnet by the first named impulse transmitting means when the 2 and B digit representing holes are sensed to prevent a 2 or said B digit entry, respectively, and to said stop magnet when a 1 digit hole is sensed at a time which shortens the 2 digit entry initiated by the first named impulse transmitting means to a 1 digit entry, and means under control of said conditioned storing means to transmit an impulse to said stop magnet coincident with the transmission of the impulse to said start magnet which initiates said A digit entry to thereby prevent said A digit entry.

9. In a record controlled subtracting machine controlled by record cards wherein holes at two index point positions represent 2, 1, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator of the type in which a digit entry is initiated by energizing a start magnet, terminated by energizing a stop magnet, and concurrent energization of said start and stop magnets prevents a digit entry, impulse transmitting means to transmit an impulse to said start ma net to initiate a 2 digit entry, impulse transmitting means to transmit an impulse to said stop magnet to terminate the 2 digit entry, and means under control of said sensing means to transmit an impulse to said stop magnet when a 2 digit representing hole is sensed concurrent with the impulse transmitted by the first named transmitting means to prevent said 2 digit entry, and to said stop magnet when a 1 hole is sensed 16 at a time which shortens the 2 digit entry initiated by the first named impulse transmitting means to a 1 digit entry.

10. In a record controlled subtracting machine controlled by record cards wherein holes at two index point positions represent 2, 1, means for sensing said index point positions to ascertain the presence of digit representing holes, an accumulator element, driving means therefor, a start magnet which is energized by an impulse to clutch said accumulator element to said driving means, a stop magnet which is energized by an impulse to declutch said accumulator element from said driving means, and concurrent energization of said start and stop magnets prevents a digit entry, impulse transmitting means to transmit an impulse to said start magnet to initiate a 2 digit entry, means to declutch said accumulator element from said driving means to terminate the 2 digit entry, and means under control of said sensing means to transmit an impulse to said stop magnet when a 2 digit representing hole is sensed concurrent with the impulse transmitted by said impulse transmitting means to prevent said 2 digit entry, and to said stop magnet when a 1 hole is sensed at a time which shortens the 2 digit entry initiated by the impulse transmitting means to a 1 digit entry.

HORACE S. BEATTIE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 2,106,801 Houston Feb. 1, 1938 2,237,153 Neumann-Lezius Apr. 1, 1941 2,302,001 Bryce Nov. 17, 1942 2,348,535 Goodale May 9, 1944 2,386,425 Brand Oct. 9, 1945 2,399,755 Mills et al May 7, 1946 FOREIGN PATENTS Number Country Date 516,807 Germany Feb. 5, 1931 Certificate of Correction Patent No. 2,439,445. April 13, 1948.

HORACE S. BEATTIE It is hereby certified that errors appear in the printed specification of the above numbered patent requiring correction as follows: Column 12, line 43, before the word hole strike out the numeral 3; colunm 13, line 22, before start insert said; line 23, for two other entries read two other digit entries; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 1st day of June, A. D. 1948.

THOMAS F. MURPHY,

Assistant Commissioner of Patents. 

